warn (somebody) against something phrasal verbphr v WARNto advise someone not to do something because it may have dangerous or unpleasant results 〔因可能有危险或产生不良结果而〕告诫(某人)不要做〔某事〕 Her financial adviser warned her against such a risky investment. 她的理财顾问告诫过她不要进行风险那么大的投资。
warn (somebody) against doing something The police have warned tourists against leaving the main tourist centres. 警方告诫游客不要离开主要旅游中心。
→ warn (somebody) against something at warn(1)